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NC-v4 EAc4:Demand response

Electric vehicle charging station used in demand response strategy

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Martina Salonen
Consultant
Ramboll Finland
LEEDuser Premium Member
5 thumbs up

Hi!

 

I wanted to ask whether anyone has experience of using electric vehicle charging station demand shedding as a strategy for LEED demand response credit? Is it even allowed?

Thanks for any tips.

 

-Martina

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Marcus Sheffer
LEED Fellow
7group / Energy Opportunities
LEEDuser Expert
4454 thumbs up

Fri, 08/24/2018 - 17:46

I would think that would be an acceptable strategy. I don't have any experience with this however. Seems to me that you could turn these off for periods of time like you could do with any other piece of equipment.
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Emily Purcell
Sustainable Design Lead
CannonDesign
LEEDuser Expert
379 thumbs up

Fri, 08/24/2018 - 18:33

I don't know if this is specifically allowed by the demand response credit, but the Green Vehicles credit does require demand response capability built into the charger. It would make sense that the two credits would align in that respect.
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Martina Salonen
Consultant
Ramboll Finland
LEEDuser Premium Member
5 thumbs up

Mon, 08/27/2018 - 07:49

Thank you for the responses, first when electrical designer suggested this strategy I thought too, that this should be acceptable. But then I was thinking what if the demand response event occurs when there are no cars being charged? Shouldn't the strategy be based on cutting demand from equipment which are continuously being used? Or would it be enough to make a case with prediction how many vehicles would be charged at all times?
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Marcus Sheffer
LEED Fellow
7group / Energy Opportunities
LEEDuser Expert
4454 thumbs up

Mon, 08/27/2018 - 19:37

If they are likely to not be in use then it would not make sense to include them. If they are likely to be in use then it makes sense to include them. So what would you need to know in order to feel confident including them?
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RDK E&S
Energy Engineer / Sustainability Specialist
NV5
LEEDuser Basic Member
15 thumbs up

Mon, 08/27/2018 - 20:40

I think that is more a question for the administrator of your particular Demand Response program than for USGBC. Demand Response programs typically understand that individual participants will vary in their ability to respond during any given event, and they plan for that. I imagine they have dealt with car charging stations and know what percentage of the total capacity of a given station they expect to be curtailed in an average event. The details of your Demand Response program and perhaps the expected usage patterns of your chargers will determine whether your charging stations are a good fit for the programs.  LEED simply asks that you register at least 10% of the expected peak demand of the facility in a Demand Response program. If the program accepts your charging stations into the program, then you will have met the requirement. Just make sure you've read the fine print of the contract. In the U.S. some programs charge penalties for underperformance, although most do not. 
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Martina Salonen
Consultant
Ramboll Finland
LEEDuser Premium Member
5 thumbs up

Thu, 09/06/2018 - 09:45

Thank you for the responses! This was helpful. Cutting the demand from charging vehicle is getting quite common for the demand response programs here, but since I found no mention of this anywhere in the LEED manual nor forum, I wanted to confirm that it is acceptable strategy and whether anybody has experience. The chargers are likely to be in used, then this should be fine.

Mon, 12/04/2023 - 18:27

If EV chargers are included in the Demand Response program, is it necessary for the project to include these loads in the energy model under EAc Optimize Energy Performance? Must the peak load used here be consistent with the peak load from the energy model used for energy performance?
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Marcus Sheffer
LEED Fellow
7group / Energy Opportunities
LEEDuser Expert
4454 thumbs up

Mon, 12/04/2023 - 20:41

Typically the peak is determined by the energy model so I would say yes.

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